dswilliams
Member
Can you install a building static reference tube and a pair of bus cables in the same conduit without violating the NEC? Please refer code number. Thanks
cable and tubing in same raceway?
- Thread starter dswilliams
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ddubbs103
Member
- Location
- Massachusetts
Are you talking about control pressure tubbing (for controlling dampers and acuators etc) and control wire 24v etc in same tubing for HVAC?
- Location
- Wisconsin
- Occupation
- PE (Retired) - Power Systems
Is your conduit a complete raceway (does it run from one enclosure to another) or is it simply a chase (not continuous)?
Pierre C Belarge
Senior Member
- Location
- Westchester County, New York
300.8 Installation of Coductors with Other Systems.
Raceways or cable trays containing electric condutors shall not contain any pipe, tube, or equal for steam, water, air, gas, drainage, or any service other than elecctrical.
Raceways or cable trays containing electric condutors shall not contain any pipe, tube, or equal for steam, water, air, gas, drainage, or any service other than elecctrical.
but he said cables, not conductors...so should be ok as long as the conduit (chase) doesnt enter an electrical enclosure with the air lines in it right?
dswilliams
Member
cable and tubing in same raceway?
Thanks for the feedback. I found 300.8 after I posted my question, is it that cut and dry? Sometimes it will be a continuous conduit. The job I'm working on this week I have to run a conduit from the open ceiling where the cable is roughed in free air, and through the roof via the roof jack to the roof top air conditioner. The conduit will be continuous to the RTU, but left open in the open ceiling. This is 1/4" pneumatic control tubing, less than 15 psi usually.
Thanks for the feedback. I found 300.8 after I posted my question, is it that cut and dry? Sometimes it will be a continuous conduit. The job I'm working on this week I have to run a conduit from the open ceiling where the cable is roughed in free air, and through the roof via the roof jack to the roof top air conditioner. The conduit will be continuous to the RTU, but left open in the open ceiling. This is 1/4" pneumatic control tubing, less than 15 psi usually.
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